s1_goto_dir(){
	cd "$1" 
}
s2_touch_empty_file_with_given_name(){
	touch "$1"
}
s3_make_directories(){
	mkdir -p projects/git projects/backup
}
s4_create_6_files(){
	touch projects/linux1_centos
	touch projects/linux1_redhat
	touch projects/linux1_c_programming
	touch projects/linux2_centos
	touch projects/linux2_redhat
	touch projects/linux2_c_pprogramming
}
s5_make_directories_in_git(){
	mkdir -p projects/git/{linux1,linux2}
}
s6_move_files_to_dir_1_or_2(){
	mv projects/linux1_* projects/git/linux1/
	mv projects/linux2_* projects/git/linux2/
}
s7_create_package_and_compress(){
	tar -czvf projects/backup/git.tar.gz -C projects git
}
s8_delete_dir_git(){
	rm _rf projects/git
}
s9_recover_from_git_tar_gz_backup(){
	tar -zxvf projects/backup/git.tar.gz -C projects
}
s10_create_package_and_compress(){
	tar -jcvf projects/backup/git.tar.gz -C projects git
}
s11_find_and_sort_alphabetically_all_created_files_and_dirs(){
	find ./projects | sort
}
s12_get_next_15_minutes_bounday(){
	timestamp=$(date +%s)
	next_15=$(((timestamp + 14*60) / (15*60) * (15*60)))
	date -d "@next_15" + "%Y-%m-%d_%H:%M:%S"
}
s1_goto_dir
s2_touch_empty_file_with_given_name "phainon.txt"
s3_make_directories
s4_create_6_files
s5_make_directories_in_git
s6_move_files_to_dir_1_or_2
s7_create_package_and_compress
s8_delete_dir_git
s9_recover_from_git_tar_gz_backup
s10_create_package_and_compress
s11_find_and_sort_alphabetically_all_created_files_and_dirs
s12_get_next_15_minutes_boundary

